If he's been out of the prog scene since after Dream Theater, wouldn't he already be pretty in the know about Fates Warning? Awesome band, by the way. Arch's vocals are awesome, and so many people think they just suck!
Frantic bleep - The sense apparatus, really good prog metal that combines elements of several other metal genre's
Behold the Arctopus - These guys have only had two EP's, there both worth getting, its uber technical instrumental prog metal